Switch Tables

["W. C. Bubel" <inmatarian@...>]

It's fairly trivial to turn a large if statement, such as
  if x == 10 then a()
  elseif x == 11 then b()
  elseif x == 12 then c() end
into a table like this
  switch = { [10]=a, [11]=b, [12]=c };
  switch[x]();

However, I'm wondering what the table construction might be for a if series such as this
  if x < 10 then a()
  elseif x == 11 then b()
  elseif x == 12 then c()
  else d() end